OBJECTIVE Observational epidemiologic studies have shown that a high intake of dietary and high serum levels of carotenoids are associated with a reduced risk of mortality from cancer and cardiovascular disease. To investigate whether high serum levels of carotenoids can reduce mortality rates, a population-based follow-up study was conducted among Japanese inhabitants. MATERIALS AND METHODS ...

The notable growth in the use of avocado oil nutritional and cosmetic field was main objective to valorize production important varieties avocados existing Morocco by analyzing its chemical composition fatty acids, sterols, tocopherols physico-chemical properties. Oleic acid is oil; they constitute between 50 65% total acids. study unsaponifiable fraction revealed that contains 3259.9–5378.8 mg...

The effects of graded levels of Flora GLO (FG), a dietary supplement containing lutein derived from marigold flowers, on tissue concentrations of lutein and alpha- and gamma-tocopherol were determined. Six groups of male weanling Fischer 344 rats (15/group) were fed ad libitum modified AIN-93G diets containing 0%, 0.30%, 0.60%, 1.20%, 2.40%, or 4.80% FG for eight weeks. FG provided 0%, 0.015%, ...

BACKGROUND Evidence that vitamin E may preserve cognitive function in elderly subjects is conflicting. The most abundant and most investigated form of vitamin E in humans is alpha-tocopherol, but other antioxidant tocopherols (beta, gamma, and delta) exist in nature. OBJECTIVE We aimed to investigate plasma concentrations of the natural tocopherols and the tocopherol oxidation markers alpha-t...

Although vitamin E has been known as an essential nutrient for reproduction since 1922, we are far from understanding the mechanisms of its physiological functions. Vitamin E is the term for a group of tocopherols and tocotrienols, of which alpha-tocopherol has the highest biological activity. Due to the potent antioxidant properties of tocopherols, the impact of alpha-tocopherol in the prevent...

Ramadan M.F., Asker M.M.S., Ibrahim Z.K. (2008): Functional bioactive compounds and biological activities of Spirulina platensis lipids. Czech J. Food. Sci., 26: 211–222. The compositions and concentrations of lipid classes, fatty acids, tocopherols were determined in the lipids from blue-green microalga Spirulina platensis. Total lipids (TL) recovered using chloroform: methanol (2:1, v/v) were...

Tocopherols, collectively known as vitamin E, are lipid-soluble antioxidants synthesized exclusively by photosynthetic organisms and are required components of mammalian diets. The committed step in tocopherol biosynthesis involves condensation of homogentisic acid and phytyl diphosphate (PDP) catalyzed by a membrane-bound homogentisate phytyltransferase (HPT). HPTs were identified from Synecho...

Aerobic life has been challenged by the changing conditions appearing through evolution resulting in appearance of both hydrophilic and lipophilic antioxidants as an indispensable protection against the ubiquitous reactive oxygenand nitrogen species. Interaction between hydrophilic and lipophilic antioxidants at interfaces often results in synergistic effects important for food stability. Such ...

Tocopherol synthesis has only been observed in photosynthetic organisms (plants, algae and some cyanobacteria). Tocopherol is synthesized in the inner membrane of chloroplasts and distributed between chloroplast membranes, thylakoids and plastoglobules. Physiological significance of tocopherols for human and animal is well-studied, but relatively little is known about their function in plant or...

this study investigated the fatty acids profile, oxidative stability indices, and bioactive compounds of virgin and processed olive oils (leccino and frantoio cultivars). results showed that fatty acid profile of the studied oils contained mostly oleic acid followed by palmitic and linoleic acid. acid values of virgin frantoio and processed leccino were 0.78 and 0.18 mg koh/g oil, with peroxide...